Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Jerzy Kakol, Thomas Gilsdorf, Luis M. Sánchez Ruiz. E). Periodica Mathematica Hungarica, 40(1):31-35, 2000. [doi]
Abstract is missing.